Mpox (Monkeypox)
Mpox, formerly known as monkeypox, is a viral disease that can cause fever, rash, and swollen lymph nodes. It is similar to smallpox but generally less severe.
Mpox Booster Vaccine: Fractional vs. Full Dose
We are studying whether a smaller booster dose of the MVA-BN vaccine is as effective as the standard dose in adults. This trial will also look at the safety and immune response of both doses.
What diseases are being studied?
Health conditions and diseases that the clinical trial is designed to study and treat.
Who can participate in the clinical trial?
These questions help us understand your situation so we can let the trial team know whether you might be a potential match. This is not a medical evaluation and is not part of the official screening, the study doctor will make the final decision..
- Are you 18 years old or older?
- Are you currently pregnant or breastfeeding?
- Have you ever had a smallpox vaccination or do you have a vaccinia scar?
- Do you have a history of severe allergic reactions to vaccines?
- Have you been diagnosed with mpox in the past?
Where is the clinical trial being conducted?
Locations and medical facilities where this clinical trial is currently recruiting or conducting research. Select the locations where you would like to participate.
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GGD Amsterdam
CSGA
Amsterdam, Netherlands
Leiden University Medical Center
Infectious Diseases
Leiden, Netherlands
GGD Haaglanden
Infectieziektenbestrijding
Scheveningen, Netherlands
Sponsor: Academisch Ziekenhuis Leiden
Last updated: Nov 26, 2025
Disclaimer: Parts of this content have been automatically extracted from the EU Clinical Trials registry. While we strive for accuracy, please always contact the trial site or sponsor directly for correct and official information before making any decisions about participation. View on EU Clinical Trials.